SX SMT Series
Microstructure Pressure Sensors
0 psi to 1 psi through
0 psi to 150 psi
The SX SMT Series provides a most cost-effective method of
measuring absolute and gage pressures in a fully packaged
sensor. These sensors are designed primarily for use with
clean, dry gases such as air and nitrogen.
This series features the standard SX chip in a ceramic, surface
mount package. The standard version features a low profile
plastic lid to better withstand high temperatures. The optional
FEATURES
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•
•
•
•
Low cost
Small size
Absolute or gage pressures
High-impedance bridge
Low power consumption
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POTENTIAL APPLICATIONS
Pneumatic controls
Automotive diagnostics
Medical equipment/ instrumentation
Dental equipment
Environmental controls
Barometric pressure measurement
Altimeters
Pneumatic controls
Battery powered equipment
The 4-pin closed bridge configuration allows electrical
connection with additional pads provided for mechanical
support. Pulsed power is recommended to achieve maximum
accuracy and conserve battery power in portable applications.
ported device offers a tube attachment port that is particularly
useful in gage applications.
SX SMT Series
SPECIFICATIONS
(1)
Characteristic
Supply voltage
Operating temperature
Storage temperature
Lead temperature (soldering 2 s to 4 s)
Maximum Rating
12 Vdc
-40 °C to 125 °C [-40 °F to 257 °F]
-55 °C to 125 °C [-67 °F to 257 °F]
250 °C [482 °F]
(1)
STANDARD PRESSURE RANGES FOR SX SERIES
Operating Pressure
0 psi to 1 psi
0 psi to 5 psi
0 psi to 15 psi
0 psi to 30 psi
0 psi to 100 psi
0 psi to 150 psi
Maximum Pressure
20 psi
20 psi
30 psi
60 psi
150 psi
200 psi
(1)
(2)
Sensitivity
Nominal
3.90
2.70
1.50
0.66
0.30
0.14
(3)
Unit
Std. Dev.
±0.40
±0.38
±0.25
±0.06
±0.05
±0.02
mV/V/psi
mV/V/psi
mV/V/psi
mV/V/psi
mV/V/psi
mV/V/psi
PERFORMANCE SPECIFICATIONS
Characteristic
(4,5)
Temperature coefficient of span
Zero pressure offset T
A
(6,5)
Temperature coefficient of offset
(7)
Combined, linearity and hysteresis
(8)
Long term stability of offset and sensitivity
(9)
Response time (10% to 90%)
Input resistance T
A
= 25 °C [77 °F]
(4,5)
Temperature coefficient of resistance
Output impedance
(10)
Repeatability
Min.
-2400
-35.0
–
–
–
–
–
–
–
–
Typ.
-2150
-20.0
4
0.2
0.1
100
4.1
750
4.1
0.5
Max.
-1900
0
–
0.5
–
–
–
810
–
–
Unit
ppm/°C
mV
µV/V/°C
% FS
mV
µs
kΩ
ppm/°C
kΩ
% FSS
Notes:
1. Reference Conditions: Supply voltage, Vs = 5.0 Vdc, T
A
= 0 °C to 70 °C [32 °F to 158 °F], common-mode line pressure =
0 psig, pressure applied to P1 unless otherwise noted.
2. If maximum pressure is exceeded, even momentarily, the package may leak or burst, or the pressure sensing die may
fracture.
3. Sensitivity is the ratio of the output signal voltage change to the corresponding input pressure change. The sensitivity is
characterized by design and periodic production testing. This parameter in not 100 % tested in production.
4. This is the best straight line fit for operation between 0 °C to 70 °C [32 °F to 158 °F]. For operation outside this temperature,
contact Honeywell representative for more specific application information.
5. This parameter is not 100 % tested. It is guaranteed by process design and tested on a sample basis only. Temperature
coefficient of span for the 1.0 psi and 5.0 psi devices is -2550 ppm/°C to -2050 ppm/°C.
6. Slope of the best straight line fit for operation between 0 °C to 70 °C [32 °F to 158 °F]. For operation outside this temperature,
contact factory for more specific application information.
7. Hysteresis is the maximum output difference at any point within the operating pressure range for increasing and decreasing
pressure.
8. Long-term stability over a one year period.
9. Response time for 0 psi to full scale span pressure step change.
10. Difference in output at any pressure with the operating pressure range and temperature within 0 °C to 70 °C [32 °F to 158 °F]
after 100 temperature cycles 0 °C to 70 °C [32 °F to 158 °F], 1.0 million pressure cycles 0 psi to full-scale span.
2
www.honeywell.com/sensing
Microstructure Pressure Sensors
DIMENSIONAL DRAWINGS (For reference only. mm [in])
LOW PROFILE SMT
1,10
O [.05]
3,30
[.13]
3,70
[.14]
0,70
[.03]
O 0,5 [.02]
FOR GAGE PORT (P2)
+ OUT
7X 0,76 [.03]
8X 0,76 [.03]
3,80
[.15]
3,30
[.13]
6,60
[.26]
7,60
[.30]
6,60
[.26]
+ EX
- EX
- OUT
2,00
[.08]
8X 1,27
[.05] ON CENTER
PADS
7,60
[.30]
3,30
[.13]
PORTED “P” SMT
0,5 [.02]
FOR GAGE PORT (P2)
3,3
[.13]
0,70
[.03]
7X
0,76
[.03]
8X 0,76
[.03]
1,01
[.04]
3,3
[.13]
R0,3
[.01]
R0,3
[.01]
7,61
[.30]
6,6
[.26]
6,6
[.26]
2,05
±0.76
[0.081
±0.003]
+ OUT
+ EX
7,6
[.30]
- EX
- OUT
2,0
[.08]
3,8
[.15]
8X 1,27
[.05] ON CENTER
PADS
3,3
[.13]
8,7
[.34]
PORTED “LP” SMT
0,5 [.02]
FOR GAGE PORT (P2)
3,3
[.13]
0,70
[.03]
7X
0,76
[.03]
8X 0,76
[.03]
1,01
[.04]
3,3
[.13]
R0,3
[.01]
R0,3
[.01]
7,61
[.30]
6,6
[.26]
6,6
[.26]
2,3
[.09]
+ OUT
+ EX
7,6
[.30]
- EX
- OUT
2,0
[.08]
3,8
[.15]
8X 1,27
[.05] ON CENTER
PADS
3,3
[.13]
8,7
[.34]
EQUIVALENT CIRCUITS
Vs
- Out
+Out
Honeywell Sensing and Control
3
SX SMT ORDER GUIDE
Cover Type
Ceramic = SX
Plastic Cover = SXP
XXX
XXX
X
XXXXX
Housing Style
Low profile cover = SMT
Ported "P" = SMPT
Ported "LP" = SMTLP
Pressure Range
0-1 = 01*
0-5 = 05*
0-15 = 15
0-30 = 30
0-100 = 100
0-300 = 150
*Not available in absolute pressure types.
Pressure Type
Gage = G
Absolute = A
WARNING
MISUSE OF DOCUMENTATION
•
The information presented in this product sheet is for
reference only. Do not use this document as a product
installation guide.
•
Complete installation, operation, and maintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result in
death or serious injury.
WARNING
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the
product could result in personal injury.
Failure to comply with these instructions could result in
death or serious injury.
WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship. Honeywell’s
standard product warranty applies unless agreed to otherwise
by Honeywell in writing; please refer to your order
acknowledgement or consult your local sales office for specific
warranty details. If warranted goods are returned to Honeywell
during the period of coverage, Honeywell will repair or replace,
at its option, without charge those items it finds defective.
The
foregoing is buyer’s sole remedy and is in lieu of all other
warranties, expressed or implied, including those of
merchantability and fitness for a particular purpose. In no
event shall Honeywell be liable for consequential, special,
or indirect damages.
While we provide application assistance personally, through
our literature and the Honeywell web site, it is up to the
customer to determine the suitability of the product in the
application.
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this
printing. However, we assume no responsibility for its use.
SALES AND SERVICE
Honeywell serves its customers through a worldwide network
of sales offices, representatives and distributors. For
application assistance, current specifications, pricing or name
of the nearest Authorized Distributor, contact your local sales
office or:
E-mail:
info.sc@honeywell.com
Internet:
www.honeywell.com/sensing
Phone and Fax:
+65 6355-2828
+65 6445-3033 Fax
Europe
+44 (0) 1698 481481
+44 (0) 1698 481676 Fax
Latin America +1-305-805-8188
+1-305-883-8257 Fax
USA/Canada +1-800-537-6945
+1-815-235-6847
+1-815-235-6545 Fax
Asia Pacific
Sensing and Control
Honeywell
1985 Douglas Drive North
Minneapolis, MN 55422
www.honeywell.com/sensing
008098-5-EN IL50 GLO Printed in USA
April 2008
© 2008 Honeywell International Inc.
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